In a radioactive decay chain, the initial nucleus \(I{}_{90}^{232}\;\) Th. At the end, there are 6 α -particles and 4-β particles which are emitted. If the end nucleus is \({}_Z^AX\), A and Z are given by

In a radioactive decay chain, the initial nucleus \(I{}_{90}^{232}\;\)

1.	In a radioactive decay chain, the initial nucleus \(I{}_{90}^{232}\;\) Th. At the end, there are 6 α -particles and 4-β particles which are emitted. If the end nucleus is \({}_Z^AX\), A and Z are given by
A.	A = 202, Z = 80
B.	A = 208, Z = 82
C.	A = 200, Z = 81
D.	A = 208, Z = 80
Answer» C. A = 200, Z = 81

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In a radioactive decay chain, the initial nucleus \(I{}_{90}^{232}\;\) Th. At the end, there are 6 α -particles and 4-β particles which are emitted. If the end nucleus is \({}_Z^AX\), A and Z are given by

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